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Variety resistance of winter barley to powdery mildew in the field in 1976-2005

Author

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  • Antonín Dreiseitl

    (Agrotest fyto Ltd., Kroměříž, Czech Republic)

Abstract

The results of evaluation of powdery mildew resistance in winter barley varieties in 285 Czech Official Trials conducted at 20 locations were analysed. Over the period, the number of varieties tested per year increased from four to seven in 1976-1985 to 53-61 in 2002-2005. To assess the resistance of varieties, only trials with sufficient disease severity were used. In 1976-2000, six varieties (1.7% of the varieties tested in the given years) ranked among resistant (average resistance of a variety in a year > 7.5) including NR-468 possessing the gene Mla13, KM-2099 with mlo and Marinka with the genes Mla7, MlaMu2. In 2001-2005, already 33 varieties (16.9%) ranked among resistant, of which Traminer possessing the genes Ml(St) and Ml(IM9 dominated. The proportion of susceptible varieties (average resistance ≤ 5.5) did not change in the two mentioned periods. Two-rowed varieties began to be tested as late as in 1990 (the first variety was Danilo), however, no difference was found in the resistance of two- and six-rowed varieties. Using an example of two pairs of varieties (Dura-Miraj and Marinka-Tiffany) with identical genes for specific resistance but with different resistance in the field, the efficiency of non-specific resistance is discussed. The resistance of domestic and foreign varieties was similar in 1994-2000; however, in 2001-2005 the difference was 0.75 point to disadvantage of domestic ones.

Suggested Citation

  • Antonín Dreiseitl, 2007. "Variety resistance of winter barley to powdery mildew in the field in 1976-2005," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 43(3), pages 87-96.
    • Handle: RePEc:caa:jnlcjg:v:43:y:2007:i:3:id:2067-cjgpb
    DOI: 10.17221/2067-CJGPB
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    References listed on IDEAS

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    1. Antonín Dreiseitl, 2006. "Powdery Mildew Resistance of Winter Barley Varieties in Czech Official Trials," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 42(2), pages 38-43.
    2. Antonín Dreiseitl, 2004. "Virulence frequencies to powdery mildew resistance genes of winter barley cultivars," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 40(4), pages 135-140.
    3. A. Dreiseitl & P. Pařízek, 2003. "Resistance of Spring Barley Varieties to Powdery Mildew in the Czech Republicin 1971-2000," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 39(2), pages 31-44.
    4. A Dreiseitl, 2005. "Resistance To Powdery Mildew In Selected Czech Winter Barley Breeding Lines," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 41(2), pages 45-50.
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